Joining tables and aggregation/sub queries - sql

Question

I have 2 tables as show below.
Table1
Order ID
Item_code
Sales_Price
Qty_ordered
Total
Qty shipped
1000
111
10
5
$50
1
1000
222
20
10
$200
2
1000
333
30
15
$450
0
I have another table that stores only the details of how much was invoiced (i.e. how much we shipped)
Table2 (because we shipped only 10x1 and 20x2 = $50)
Order ID
Invoice_total
1000
$50
I wrote the following query,
select T1.Order_ID,
sum(T1.Qty_Ordered) as Qty_Ordered,
sum(T1.Total) as Total_Amt_ordered,
sum(T1.Qty_shipped) as Qty_Shipped,
sum(T2.Invoice_total)
from T1 join
T2 on T1.Order_ID = T2.Order_ID
This query gives me the following output, (It is adding $50 to all the rows of T1 Orders).
Order ID
Qty_ordered
Total
Qty shipped
Invoice_total
1000
30
$700
3
$150
Whereas now, I want my output to be as:
Order ID
Qty_ordered
Total
Qty shipped
Invoice_total
1000
30
$700
3
$50
(because we shipped only $50)
What changes should I make to my query?
I know I can just hard code it but my database has 1000's of orders and 1000's of Half shipped Orders. I want to keep track of Shipped $ (Invoiced $) for all the orders.

Answer 1

If I understand correctly, you want:
select T2.Order_ID, T2.Invoice_total,
sum(T1.Qty_Ordered) as Qty_Ordered,
sum(T1.Total) as Total_Amt_ordered,
sum(T1.Qty_shipped) as Qty_Shipped,
from T2 join
T1
on T1.Order_ID = T2.Order_ID
group by T2.Order_ID, T2.Invoice_total;
That is, you don't want to aggregate Invoice_total. You just want it to be a group by key.